audiphone

[aw-duh-fohn]
noun Medicine/Medical.
  1. a kind of diaphragm held against the upper teeth to assist hearing by transmitting sound vibrations to the auditory nerve.

Origin of audiphone

1875–80, Americanism; audi(o)- + -phone, modeled on telephone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for audiphone

audiphone

noun
  1. a type of hearing aid consisting of a diaphragm that, when placed against the upper teeth, conveys sound vibrations to the inner ear
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012